ArticleEcology and evolution2020
Genetic diversity analysis of papaya leaf distortion mosaic virus isolates infecting transgenic papaya "Huanong No. 1" in South China.
Article in Ecology and evolution, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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- Genetic diversity analysis of papaya leaf distortion mosaic virus isolates infecting transgenic papaya "Huanong No. 1" in South China.Ecology and evolution · 2020Article
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5 authors at 1 institution in 1 country.
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Abstract
The commercialized genetically modified papaya "Huanong No. 1" has been utilized to successfully control the destructive virus-papaya ringspot virus (PRSV) in South China since 2006. However, another new emerging virus, papaya leaf distortion mosaic virus (PLDMV), was found in some PRSV-resistant transgenic plants in Guangdong and Hainan provinces of South China through a field investigation from 2012 to 2019. The survey results showed that "Huanong No. 1" papaya plants are susceptible to PLDMV, and the disease prevalence in Hainan Province is generally higher than that in Guangdong Province. Twenty representative isolates were selected to inoculate "Huanong No. 1," and all of the inoculated plants showed obvious disease symptoms similar to those in the field, indicating that PLDMV is a new threat to widely cultivated transgenic papaya in South China. Phylogenetic analysis of 111 PLDMV isolates in Guangdong and Hainan based on the coat protein nucleotide sequences showed that PLDMV isolates can be divided into two groups. The Japan and Taiwan China isolates belong to group I, whereas the Guangdong and Hainan isolates belong to group II and can be further divided into two subgroups. The Guangdong and Hainan isolates are far different from the Japan and Taiwan China isolates and belong to a new lineage. Further analysis showed that the Guangdong and Hainan isolates had a high degree of genetic differentiation, and no recombination was found. These isolates deviated from neutral evolution and experienced population expansion events in the past, which might still be unstable. The results of this study provide a theoretical basis for clarifying the evolutionary mechanism and population genetics of the virus and for preventing and controlling the viral disease.
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